GPL-1 and birth control.

[Coolguy]

Hello Evo family.
I have heard mixed theories on this but curious as to which GPL-1 effect birth control in females. Mainly something like the pill.
We all know of the ozempic babies but do the other GPL-1s effect it in the same way.
Does something like Reta have the same effect?
Thanks in advance

 

[Alice_In_Ironland]

Any glp-1 that slows gastric emptying could impact the absorption of oral medication (including the contraceptive pill). Implanon or an IUD are going to be the most reliable options. Unless being used to manage endo or PCOS, copper IUD (non-hormonal) would be my pick.

 

[LevButlerov]

Hello Evo family.
I have heard mixed theories on this but curious as to which GPL-1 effect birth control in females. Mainly something like the pill.
We all know of the ozempic babies but do the other GPL-1s effect it in the same way.
Does something like Reta have the same effect?
Thanks in advance

I have a few female clients exact same question GLP1s dont have an impact on birth control but I suggest she doesn't take the pill around the shot timing, give it at least 8 hours, then ED thereafter. @Coolguy

@BeMe @HarleyGuy @Allupfromhere @Pigsy @Dreamer @waggat @Trenhead3cc @Kopite67 @codezz
@MarkNV @rizzlekdizzle @Grumpy @Shakey @Eveflorence @LH5515 @Yuri @Doctakay @catdadironman

 

[Shakey]

Hello Evo family.
I have heard mixed theories on this but curious as to which GPL-1 effect birth control in females. Mainly something like the pill.
We all know of the ozempic babies but do the other GPL-1s effect it in the same way.
Does something like Reta have the same effect?
Thanks in advance

I had to look into this a fair bit for my anti-convulsants. As @Alice_In_Ironland mentioned, a glp will slow the absorption of oral medication. This slowed absorption is unpredictable in the initial weeks until the body adapts and gastric slowing stabilizes.

This is generally only important in "time-sensitive" medications like anti-consvulsants, cardiac medications etc etc. but certain contraceptives fall into the moderate time sensitive catergory with one option being strict.

**Warning** - these are approximates found in a brief web search, consult a physician on contraceptive therapuetic windows. (Coverin my ass )
Estrogen/progestin pill - Safe window <24hrs
Old progestin only pill - Safe window <3hrs
New progestin only pill - Safe windiw <12hrs
Anything later is considered a missed dose.

For comparison anti-convulsants are around 1-4hrs with a few being around 6hrs or so.

After a few months, gastric slowing would be more predictable and your "delayed" absorption is now your new "normal" medication timing. With a stable absorption, every dose is delayed the same amount of time creating an offset that will increase or decrease with glp dose adjustments.

Now for ozempic babies. These are the main drivers.
1. Return of ovulation to suffers PCOS and obesity-related anovulation.
- weight loss + improved insulin sensitivity
- horminal changes normalize cycles
2. Unrecognized fertility rebound
- assume still subfertile when fertility improves faster than expected
- poor contraceptive habits while assume still subfertile
3. Oral birth control less reliable
- vomiting/diarrhea causeing reduced ir no absorption at all
- Delated gastric emptying - depends on compiund really
- missed dose because of nausea
4. Weight loss
- better cycles
- imoroved estrogen/progesterone balance
- reduced insulin resistance

Take your pick, theres a few causes. @Alice_In_Ironland suggestions are a good idea. If oral contraceptives are kept as the prefered birth control method, be conservative and assume a 3-4 month risk period with extra risk on top after each dose increase even when your emptying is stable. I imagine 4-8 weeks will get you stable gastric emptying so 3-4 months is conservative.

Disclaimer - im not a doctor

 

[Allupfromhere]

This was a really interesting read, not that we're planning any more kids though lol

 

[Shakey]

This was a really interesting read, not that we're planning any more kids though lol

Sometimes a random topic will grab my OCD by horns and i just have to know.

 

[Allupfromhere]

Sometimes a random topic will grab my OCD by horns and i just have to know.

Hahaha literally what happened when i seen the thread title

 

[Mobster]

Great replies team

 

[stevesmi]

i would argue they would increase fertility in both men and female by making you more healthy

of course there are no iron clad studies to prove this, but there are PLENTY of studies that show healthier spouses have stronger fertility

 

[Ulter]

I had to look into this a fair bit for my anti-convulsants. As @Alice_In_Ironland mentioned, a glp will slow the absorption of oral medication. This slowed absorption is unpredictable in the initial weeks until the body adapts and gastric slowing stabilizes.

This is generally only important in "time-sensitive" medications like anti-consvulsants, cardiac medications etc etc. but certain contraceptives fall into the moderate time sensitive catergory with one option being strict.

**Warning** - these are approximates found in a brief web search, consult a physician on contraceptive therapuetic windows. (Coverin my ass )
Estrogen/progestin pill - Safe window <24hrs
Old progestin only pill - Safe window <3hrs
New progestin only pill - Safe windiw <12hrs
Anything later is considered a missed dose.

For comparison anti-convulsants are around 1-4hrs with a few being around 6hrs or so.

After a few months, gastric slowing would be more predictable and your "delayed" absorption is now your new "normal" medication timing. With a stable absorption, every dose is delayed the same amount of time creating an offset that will increase or decrease with glp dose adjustments.

Now for ozempic babies. These are the main drivers.
1. Return of ovulation to suffers PCOS and obesity-related anovulation.
- weight loss + improved insulin sensitivity
- horminal changes normalize cycles
2. Unrecognized fertility rebound
- assume still subfertile when fertility improves faster than expected
- poor contraceptive habits while assume still subfertile
3. Oral birth control less reliable
- vomiting/diarrhea causeing reduced ir no absorption at all
- Delated gastric emptying - depends on compiund really
- missed dose because of nausea
4. Weight loss
- better cycles
- imoroved estrogen/progesterone balance
- reduced insulin sensitivity (insulin sensitivity strongly effects ovulation)

Take your pick, theres a few causes. @Alice_In_Ironland suggestions are a good idea. If oral contraceptives are kept as the prefered birth control method, be conservative and assume a 3-4 month risk period with extra risk on top after each dose increase even when your emptying is stable. I imagine 4-8 weeks will get you stable gastric emptying so 3-4 months is conservative.

Disclaimer - im not a doctor

that's a really good post and a lot of different things to think about.

 

[2Thick]

Hello Evo family.
I have heard mixed theories on this but curious as to which GPL-1 effect birth control in females. Mainly something like the pill.
We all know of the ozempic babies but do the other GPL-1s effect it in the same way.
Does something like Reta have the same effect?
Thanks in advance

I would imagine if you were looking for this type of result, I would think less drugs in your system the better.

 

[ROIDDERS]

Hello Evo family.
I have heard mixed theories on this but curious as to which GPL-1 effect birth control in females. Mainly something like the pill.
We all know of the ozempic babies but do the other GPL-1s effect it in the same way.
Does something like Reta have the same effect?
Thanks in advance

I think this is a tough one because you haven't had it studied for that. I haven't seen any evidence of people who are involved in having babies who are messing with this stuff in the studies.

 

[ceo]

Hello Evo family.
I have heard mixed theories on this but curious as to which GPL-1 effect birth control in females. Mainly something like the pill.
We all know of the ozempic babies but do the other GPL-1s effect it in the same way.
Does something like Reta have the same effect?
Thanks in advance

bros i not sure on this one. i see a lot of people having kids even on tons of ped's sometimes

 

[HarleyGuy]

Hello Evo family.
I have heard mixed theories on this but curious as to which GPL-1 effect birth control in females. Mainly something like the pill.
We all know of the ozempic babies but do the other GPL-1s effect it in the same way.
Does something like Reta have the same effect?
Thanks in advance

Looks like you started a good research thread for us to point others to @Coolguy!

@Shakey nice reply gave me lots to think about
Looks like @LevButlerov had it all thought out already too
Thanks @Alice_In_Ironland for the interesting reply too with other options for female members.

Like @Mobster said it's great to see the team come together!

And having said all that I have zero input for this topic

 

[ballin2504]

Never even heard of this

 

[Tiger Salman Khan]

this is something that has no solid evidence to comment on.......

 

[Shakey]

Here is a meta-analysis study that analyzes the data from other peer reviewed studies about the effect of GLP-1s on PCOS patients. It narrowed down 448 relevant studies to 11 for analysis.

It observes a 72% increase in spontaneous pregnancy rates with no meaningful differences between at 11 studies and a 0.2% chance that the data and the results were completely random. This is in the "strong evidence" range of 0.1%-0 5%.

https://pmc.ncbi.nlm.nih.gov/articles/PMC10631119

 

[HarleyGuy]

Here is a meta-analysis study that analyzes the data from other peer reviewed studies about the effect of GLP-1s on PCOS patients. It narrowed down 448 relevant studies to 11 for analysis.

It observes a 72% increase in spontaneous pregnancy rates with no meaningful differences between at 11 studies and a 0.2% chance that the data and the results were completely random. This is in the "strong evidence" range of 0.1%-0 5%.

https://pmc.ncbi.nlm.nih.gov/articles/PMC10631119

Can't argue with that retort LOL.

It makes sense too and one can extrapolate that any oral medication ought to be considered compromised if taken haphazard with a bolus GLP injection.

 

[Shakey]

Can't argue with that retort LOL.

It makes sense too and one can extrapolate that any oral medication ought to be considered compromised if taken haphazard with a bolus GLP injection.

Agreed, as with all medication, interactions both direct and indirect should be checked before before trying a new compound. That goes especially for life saving medications.

For anyone who wishes to check interaction I use https://neemio.com/ . It has 4000 substances ranging from Rx medications and herbal supplements to peptides and steroids.

@LevButlerov @HarleyGuy perhaps this is a tool that could prove beneficial to EVO members on medications.

 

[HarleyGuy]

Agreed, as with all medication, interactions both direct and indirect should be checked before before trying a new compound. That goes especially for life saving medications.

For anyone who wishes to check interaction I use https://neemio.com/ . It has 4000 substances ranging from Rx medications and herbal supplements to peptides and steroids.

@LevButlerov @HarleyGuy perhaps this is a tool that could prove beneficial to EVO members on medications.

I will look into neemio and it may be worth of a Community Research thread to point members to to check contraindications.

 

[Panda22]

I had to look into this a fair bit for my anti-convulsants. As @Alice_In_Ironland mentioned, a glp will slow the absorption of oral medication. This slowed absorption is unpredictable in the initial weeks until the body adapts and gastric slowing stabilizes.

This is generally only important in "time-sensitive" medications like anti-consvulsants, cardiac medications etc etc. but certain contraceptives fall into the moderate time sensitive catergory with one option being strict.

**Warning** - these are approximates found in a brief web search, consult a physician on contraceptive therapuetic windows. (Coverin my ass )
Estrogen/progestin pill - Safe window <24hrs
Old progestin only pill - Safe window <3hrs
New progestin only pill - Safe windiw <12hrs
Anything later is considered a missed dose.

For comparison anti-convulsants are around 1-4hrs with a few being around 6hrs or so.

After a few months, gastric slowing would be more predictable and your "delayed" absorption is now your new "normal" medication timing. With a stable absorption, every dose is delayed the same amount of time creating an offset that will increase or decrease with glp dose adjustments.

Now for ozempic babies. These are the main drivers.
1. Return of ovulation to suffers PCOS and obesity-related anovulation.
- weight loss + improved insulin sensitivity
- horminal changes normalize cycles
2. Unrecognized fertility rebound
- assume still subfertile when fertility improves faster than expected
- poor contraceptive habits while assume still subfertile
3. Oral birth control less reliable
- vomiting/diarrhea causeing reduced ir no absorption at all
- Delated gastric emptying - depends on compiund really
- missed dose because of nausea
4. Weight loss
- better cycles
- imoroved estrogen/progesterone balance
- reduced insulin resistance

Take your pick, theres a few causes. @Alice_In_Ironland suggestions are a good idea. If oral contraceptives are kept as the prefered birth control method, be conservative and assume a 3-4 month risk period with extra risk on top after each dose increase even when your emptying is stable. I imagine 4-8 weeks will get you stable gastric emptying so 3-4 months is conservative.

Disclaimer - im not a doctor

That’s really great info!

Would be interesting to see a specific study done as there are so many variables!

With oral contraceptives the general rule is after a missed dose it takes an average of 7 days of consistent dosing for the contraceptive to be effective again. Keeping in mind however the window to conceive in a cycle is quite specific anyway - so that 7 day ineffective window and ovulation would need to overlap. TBH I don’t know how cycles and ovulation timing works on different oral contraceptives too.

We also know now (or I hope we’re all learning Evo bro’s) that the males sperm health is one of the largest drivers for fertility and healthy babies - drinking, drugs, poor health and lifestyle are all major contributing factors - not “infertility” but the actual sperm health from lifestyle!!
It’s a really interesting topic for any Bro looking to conceive btw - your sperm health can determine even things like morning sickness!!

So would be interesting to know if men using GLPS also had an increase in successful pregnancy with their partners!

If it’s used for obesity reasons then we can assume lower body fat is a contributing factor - but I wonder for lower body fat individuals using glps how it could be impactful!

 

[Shakey]

I had a look around @Panda22 , but theres not much in the way of studies done of pregnancy rate increases in couples where only the men are taking GLP1s.

As for sperm quality, there is some but so far clinical evidence is limited. It looks like improvements in total testosterone and sperm parameters was observed mostly in obese men and men with metabolic disorders therefore is could theoretically improve pregancy rates, but evidence is limiter.

I did find some studies when i took a peek after reading your post.

GLP-1 receptors present in testicular tissue humans and rodents.
https://sci-hub.st/storage/tail/836...f52b4/caltabiano2020.pdf#navpanes=0&view=FitH

Improvements in semen parameters were reported in obese or hypogonadal men; however, no significant changes were found in healthy individuals. (Cant get full free text yet, study was in jan 2026)
https://academic.oup.com/jsm/article-abstract/23/2/qdaf381/8416287

Semen quality was improved by increasing sperm concentration, total sperm count, motility, and the proportion of morphologically normal sperm, particularly in obese men. (Couldnt find full txt.)
https://www.sciencedirect.com/science/article/pii/S2772973725007076

GLP-1 receptors are present in male reproductive tissues. Preclinical studies indicate GLP-1RAs enhance spermatogenesis, hormone profiles, and sperm function in obese/diabetic rodent models via cAMP/PKA and PI3K/Akt pathways. In vitro data show improved sperm motility and Sertoli cell metabolism with GLP-1RAs.
https://sci-net.xyz/storage/5991729...nd-Future-Directions.pdf#view=FitH&navpanes=0

 

[HarleyGuy]

I had a look around @Panda22 , but theres not much in the way of studies done of pregnancy rate increases in couples where only the men are taking GLP1s.

As for sperm quality, there is some but so far clinical evidence is limited. It looks like improvements in total testosterone and sperm parameters was observed mostly in obese men and men with metabolic disorders therefore is could theoretically improve pregancy rates, but evidence is limiter.

I did find some studies when i took a peek after reading your post.

GLP-1 receptors present in testicular tissue humans and rodents.
https://sci-hub.st/storage/tail/836...f52b4/caltabiano2020.pdf#navpanes=0&view=FitH

Improvements in semen parameters were reported in obese or hypogonadal men; however, no significant changes were found in healthy individuals. (Cant get full free text yet, study was in jan 2026)
https://academic.oup.com/jsm/article-abstract/23/2/qdaf381/8416287

Semen quality was improved by increasing sperm concentration, total sperm count, motility, and the proportion of morphologically normal sperm, particularly in obese men. (Couldnt find full txt.)
https://www.sciencedirect.com/science/article/pii/S2772973725007076

GLP-1 receptors are present in male reproductive tissues. Preclinical studies indicate GLP-1RAs enhance spermatogenesis, hormone profiles, and sperm function in obese/diabetic rodent models via cAMP/PKA and PI3K/Akt pathways. In vitro data show improved sperm motility and Sertoli cell metabolism with GLP-1RAs.
https://sci-net.xyz/storage/5991729...nd-Future-Directions.pdf#view=FitH&navpanes=0

@Panda22 you have activated the @Shakey OCD monster. He will be up now til the sun rises in vampiric fashion finding the elusive pregnancy rate GLP1 study, mark my words

 

[Noah Wixx]

Any glp-1 that slows gastric emptying could impact the absorption of oral medication (including the contraceptive pill). Implanon or an IUD are going to be the most reliable options. Unless being used to manage endo or PCOS, copper IUD (non-hormonal) would be my pick.

Im glad you are here because i could not even try to answer this question